Wind generator is an electromechanical device used to convert wind energy into mechanical energy and then into electric energy. The electric power output from wind generator can be used to charge storage batteries for energy storage and the stored electric energy can be transformed into the 220V/50Hz alternating power supply or the power supply of local voltage and frequency. Wind electric power generation needs no fuel and have neither pollution nor noise. This electricity generation mode is commonly fit for those regions that have good wind energy conditions and are far from the power grid or those that the power grid is off normal. Wind generator can supply electricity for refrigerators, washer, lighting system, TV sets, searchlights, playback devices, communication devices and motor-driven tools.